std::basic_common_reference<tuple-like> (C++23) 确定tuple和tuple-like类型的公共引用类型 (类模板特化) std::common_type<tuple-like> (C++23) 确定tuple和tuple-like类型的公共类型 (类模板特化) std::formatter<std::tuple> (C++23) tuple的格式化支持 ...
Das Klassentemplate std::tuple ist eine Collection fester Größe mit heterogenen Werte. Es ist die Verallgemeinerung von std::pair . Original: Class template std::tuple is a fixed-size collection of heterogeneous values. It is a generalization of std::pair. The text has been machine-...
std::cout << std::endl;return(0); }/// reference: http://zh.cppreference.com/w/cpp/utility/tuplestaticstd::tuple<double,char, std::string>get_student(intid){if(id ==0)returnstd::make_tuple(3.8,'A',"Lisa Simpson");if(id ==1)returnstd::make_tuple(2.9,'C',"Milhouse Van Hou...
template< std::size_t I, class T > struct tuple_element; // not defined (1) (since C++11) template< std::size_t I, class T > struct tuple_element< I, const T > { using type = typename std::add_const<typename std::tuple_element<I, T>::type>::type; }; (2) (since C++...
std::basic_common_reference<tuple-like> (C++23) determines the common reference type of atupleand atuple-liketype (class template specialization) std::common_type<tuple-like> (C++23) determines the common type of atupleand atuple-liketype ...
std::tuple是c++11提供的新模板类,在很多流行语言都有对应的实现,一般翻译为元组。使用它可以把多个不同类型的变量组合成一个对象。 简单示例 以下是std::tuple的简单示例(来源:https://en.cppreference.com/w/cpp/utility/tuple) #include<tuple>#include<iostream>#include<string>#include<stdexcept>std::tuple...
首先,可以确定std::_Tuple_impl是个递归类。 std::_Tuple_impl<_Idx, _Tail...> 的父类是 std::_Tuple_impl<_Idx + 1, _Tail...>,最终的父类,也就是递归基是 std::_Tuple_impl<_Idx, _Head>。 我们知道,在继承体系中,最先构造父类,再构造子类。因此,std::tuple对象中,最先构造的是最后一个...
__cpp_lib_tuples_by_type201304L(C++14)按类型(5-8)寻址元组 示例 运行此代码 #include <cassert>#include <iostream>#include <string>#include <tuple>intmain(){autox=std::make_tuple(1,"Foo",3.14);// 注意:std::get 会生成到 std::get<std::variant> 的错误链接usingstd::get;// 基于索引...
std::tuple是c++11提供的新模板类,在很多流行语言都有对应的实现,一般翻译为元组。使用它可以把多个不同类型的变量组合成一个对象。 简单示例 以下是std::tuple的简单示例(来源:https://en.cppreference.com/w/cpp/utility/tuple) 12345678910111213141516171819202122232425262728293031323334353637...
)(T&&t,F&&f){init(t,f,std::make_index_sequence<std::tuple_size_v<std::remove_reference_...